高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (7): 1264-1268.doi: 10.7503/cjcu20150306

• 分析化学 • 上一篇    下一篇

第二近红外窗口荧光Ag2Te量子点的合成

王佳梅, 朱春楠, 朱东亮, 田智全, 林毅, 庞代文()   

  1. 武汉大学生物医学分析化学教育部重点实验室, 化学与分子科学学院,病毒学国家重点实验室, 高等研究院, 武汉430072
  • 收稿日期:2015-04-16 出版日期:2015-07-10 发布日期:2015-06-05
  • 作者简介:联系人简介: 庞代文, 男, 教授, 博士生导师, 主要从事生物医学分析化学和纳米生物技术研究. E-mail:dwpang@whu.edu.cn
  • 基金资助:
    国家“九七三”计划项目(批准号: 2011CB933600)和国家自然科学基金(批准号: 21375100)资助

Synthesis of Photoluminescence Ag2Te Quantum Dots in Second Near-infrared Window

WANG Jiamei, ZHU Chunnan, ZHU Dongliang, TIAN Zhiquan, LIN Yi, PANG Daiwen*()   

  1. Key Laboratory of Analytical Chemistry for Biology and Medicine(Ministry of Education),College of Chemistry and Molecular Sciences, State Key Laboratory of Virology,the Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
  • Received:2015-04-16 Online:2015-07-10 Published:2015-06-05
  • Contact: PANG Daiwen E-mail:dwpang@whu.edu.cn
  • Supported by:
    † Supported by the National Basic Research Program of China(No.2011CB933600) and the National Natural Science Foundation of China(No.21375100)

摘要:

以巯基辛烷为表面配体, 通过调控Ag前体和Te前体的比例, 制备了第二近红外窗口荧光Ag2Te量子点. 采用透射电子显微镜(TEM)、 X射线衍射光谱(XRD)、 X射线光电子能谱(XPS)、 紫外-可见-近红外吸收光谱和荧光光谱等对产物进行了表征. 结果表明, 制得了粒径均一、 分散性好的油溶性Ag2Te量子点, 其最大荧光发射波长位于1320 nm, 荧光量子产率高达4.2%.

关键词: 近红外, Ag2Te, 量子点, 荧光

Abstract:

Ag2Te quantum dots(QDs) with an emission in the second near-infrared window were synthesized by tuning the ratio of Ag precursor to Te precursor using 1-octanethiol as a ligand. The products were characterized by transmission electron microscopy(TEM), X-ray powder diffraction(XRD), X-ray photoelectron spectroscopy(XPS), UV-Vis-NIR absorption spectroscopy and the corresponding photoluminescence(PL) spectroscopy. The as-prepared Ag2Te QDs have a narrow size distribution, good dispersibility with fluorescence emission at 1320 nm and a PL quantum yield of 4.2%.

Key words: Near-infrared, Ag2Te, Quantum dot, Fluorescence

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